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Electromagnetic compatibility of technical equipment. Systems and equipment of railway transport. Part 4-1. Devices and equipment of railway automatics and telemechanics. Requirements and testing methods
Document status: Cancelled
Electromagnetic compatibility of technical equipment. Low-voltage power supplies, d.c. output. Requirements and test methods
Document status: Cancelled
Analog radio stations. Basic parameters. Technical requirements
Document status: Active
Speech transmission over varies communication channels. Techniques for measurements of speech quality, intelligibility and voice identification
Document status: Active
Test chart 0273 for facsimile transmission of newspaper pages. Specifications
Document status: Active